| windows bash / ubuntu | reg expression with grep lonking for all the interface in a configuration file: the pattern is: ge-x/x/x or xe-x/x/x but only starting the line grep "^ [gx]e-[0-9]/[0-9]" Config_Only.txt Count the number of line grep "^ [gx]e-[0-9]/[0-9]" Config_Only.txt | wc -l |